Cells and Organelles

Biology AS

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Cells and organelles
Prokaryotic VS Eukaryotic
Prokaryotic organisms are single-celled organisms bacteria
Eukaryotic organisms made up of lots of eukaryotic cells animals, plants, fungi
Characteristic Prokaryotic Eukaryotic
Size Smaller Larger
DNA In nucleus, linear Circular DNA free floating in
cytoplasm
Ribosomes Smaller Larger
Flagellum Some Only sperm
Cell wall
Plasmids (small loop of DNA) Sometimes present Never present
Organelles Fewer no membrane bound More some membrane
organelles bound organelles
Plant VS Animal
Component Plant Animal
Cell membrane
RER
Nucleolus
Nucleus
SER
Lysosome
Ribosome
Nuclear envelope
Golgi body
Cytoplasm
Mitochondrion
Cell wall
Plasmodesmata
Large vacuole

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Chloroplasts
Organelles
Organelle Description Function
Plasma membrane Found on surface of Regulates movement
prokaryotic and of substances in and
eukaryotic cells out of cells, receptor
molecules on it which
respond to chemicals
like hormones
Microvilli Folds in cell membrane Found on cells involved
in absorption
increase surface area
of cell
Nucleus Large organelle Chromatin made up
surrounded by nuclear of proteins and DNA,
envelope (double controls cell activities
membrane) which Pores allow
contains many nuclear substances to move
pores contains between cytoplasm
chromatin and often…read more

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Prokaryotic cells
Small
No nucleus circular DNA free floating in cytoplasm
Fewer organelles than eukaryotic cells no mitochondria
Smaller ribosomes than eukayotic cells…read more

Comments

Chinenye

thanks a lot this was really good and really helpful!!

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